Practice Volcanoes

Front

What is a tsunami?

Back

A large ocean wave that results from an underwater earthquake, landslide, or volcanic eruption.

Front

What do active volcanoes in the Caribbean Sea indicate about plate tectonics?

Back

They form an island arc, indicating a converging plate boundary.

Front

What is the property of magma that causes it to flow slowly compared to water?

Back

A physical property of liquids.

Front

What is viscosity?

Back

A fluid's resistance to flow.

Front

What is the name of the line of volcanic activity that encircles the Pacific Ocean basin?

Back

Ring of Fire.

Front

What causes volcanic eruptions?

Back

The movement of tectonic plates and the buildup of pressure from magma.

Front

What is magma?

Back

Magma is molten rock located beneath the Earth's surface.

Front

What is the difference between magma and lava?

Back

Magma is underground; lava is magma that has reached the Earth's surface.

Front

What is a volcanic island?

Back

An island formed by volcanic activity, often from eruptions that build up land above sea level.

Front

What is a caldera?

Back

A large depression formed when a volcano erupts and collapses.